Gas-engine.



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-w. s. HALSEY.

GAS ENGlNE [Application tiled Feb. 1, 1900.1

(.No Model.)

WTNESSES:

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No. 659,027. Patented Dot. 2, i900.

W S HALSEY GAS ENGINE.

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Tamm. waswmown u c UNITED STATES PATENT OFFICE.

WILLIAMS. HALSEY, OF PITTSBURG, PENNSYLVANIA.

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent N o. 659,027, dated October2, 1900.

Application filed February l, 1900. Serial No. 3,565. (No model.)

T0 a/ZZ whom, t 'ma/y concern:

Be it known that I, WILLIAM S. HALSEY, of Pittsburg, in the county ofAllegheny and State of Pennsylvania, have invented a certain new anduseful Improvement in Gas- Engiues, of which improvement the followingis a specification.

The object of my invention is to provide an internal-combustion motor ofsimplified and comparatively-iuexpensive construction in which acompression and an explosion of the mixture of gas and air shall beeffected at each revolution of the shaft and the products of combustionshall be effectively discharged from the cylinder after each Workingstroke of the piston. i

To this end my invention, generally stated, consists iu the combinationof a cylinder having a solid or imperforate wall between its end ports,a piston working therein, admission-valves controlling the supply of amixture of gas and air to one end of the cylinder, au independentexhaust-'valve controlling the discharge of products of combustion fromthe opposite end of the cylinder, and a supply-valve controlling apassage through the piston for the traverse of compressed charges of amixture of gas and air from the suction side of the piston to thepressure side thereof. y

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings, Figure lis a side view in elevation of agas-engine embodying my invention with the cylinder and valve-casings insection on the line a, d of Fig. 3; Fig. 2, a view in elevation as seenfrom the opposite side; Fig. 3, a vertical transverse section throughthe cylinder and exhaust-valve casing on the lin'e b b of Fig. l; andFig. 4, a vertical longitudinal section, on an enlarged scale, through aportion of the cylinder and the admission-valve casing.

In the practice of my invention I provide a suitable frame or bed-platel, upon one end of which a main or crank shaft 2 is supported inbearings in the ordinary manner and to the other end of which is secureda cylinder 3, which is surrounded by a Water-jacket 4. The shell or wallof the cylinder is solid or imperforate between the admission andexhaust ports at its opposite ends, hereinafter specified, and it isclosed at its end farther fromthe crank-shaft bya removable head 5, andits opposite end is closed by a head 6, which is preferably formedintegral with the bedplate l, as indicated in Fig. 1. yApiston 7 is ttedto traverse longitudinally in the cylinder 3 and is secure 8, theopposite end of which is secured to a cross-head 9,`traversing on guidesl0 on the bed-plate and carrying a pin 1l, which is coupled by aconnecting-rod l2 to a' crankpin'l3 on a crank disk or arm 14, fixedupon the crank-shaft 2.

An admission-valve casing l5 is formed upon or fixed to the cylinder 3at its end adjacent to the crank-shaft, said casing communicating Withthe cylinder by an admission-port 16, and an exhaust-valve,casing 17 issecured to the opposite end of the cylinder and communicates therewithby an exhaustport 18. Agas-supply pipe 19, leading from any suitablesource of Vgas-supply, opens into the admission-Valve casing l5 andcommunicates with a valve-cage 20, secured removably therein throughports on the mvalvecage. A passage 2l, leading to the atmosphere, isformed in the outer end of the valve-cage 2O and is controlled by anupwardly-opening air-ad mission valve 22, whichV is normally held seatedbya lspring 23. The interior of the valve-cage communicates with theadmission-port`l6 by a passage 24, controlled by an upwardly-openingcheck-valve 25. A lateral nozzle or passage 26 for the connection of anexhaust-pipe leading to a desired point of discharge is formed upon theside of the exhaust-valve casing 17, and communication betweenv saidpassage and the exhaust-port 18 is controlled by an upwardly-openingexhaust-Valve 27, fixed upon a stem 28. The outer end of theexhaustvalvestem 28 carries a pin 29, which lits in a can1-groove 30, formed in abar 3l, which is fitted to traverse in a guide 32 on the outer end ofthe valve-casing 17. The bar 3l is journaled to one end of a doublearmedrocking lever 33, which yis centrally pivoted on the water-jacket 4, andthe opposite end of the rocking lever is coupled tfo an eccentricrod 34,which is secured to the strap 35 of an eccentric 36, fixed upon thecrank-shaft 2. A supply-valve 37, which opens in the direcupon apiston-rod.

tion of the cylinder-head 5 and is normally I that side of the pistonuntil the piston reaches held seated hy a spring 3S, controls a passage39, leading from one side of the piston to the other. the crank-shaft 2,and the engine is provided with any suitable known ignitingdevice-as,for example, an igniting-tube 41, located in position to fire a chargeon the outer or lefthaud side of the piston 7.

In the operation of a motor embodying my invention the movement of thepiston 7 to the left, which is effected by the momentum of the fly-wheel40, draws in air through the passage controlled bythe air-admissionvalve 22, and gas is supplied through the gas-supply pipe 19. 'lhe airand gas commingle in the interior of the valve-cage 20, and theresultant mixture passes through the port governed by the check-valve25and through the inlet-port 16 into the cylinder on 'the righthand orsuction side of its piston 7. Assuming a compressed charge of a mixtureof gas and air to have been previously supplied to the clearance-spaceon the left-hand or pressure side of the piston, as presently to bedescribed, such charge is exploded and burned by the igniting device 41,and the resultant expansion of the charge effects the working orright-hand stroke of the piston, which, through its connections,correspondingly rotates the crank-shaft 2 and fly-wheel -l-O. In makingits working stroke the piston initially compresses the mixture of gasand air which has been previously admitted to the cylinder on theright-hand or suction side of the piston until the pressure of saidmixture becomes equalized with that of the products of combustion on theleft-hand or pressure side of `the piston, whereupon the supplyvalve27is unseated and the charge in the cylinder on the suction side of the'piston passes through the opening therein to the pressure side thereof.At or about the period of such equalization the exhaust-valve 27 isunseated through its connections with the eccentric 3G, and the burnedgases are expelled through the exhaust-port 18 and passage 26 by thecharge of unburned mixture, which passes to the pressure side of thepiston through the passage 39 therein. It will be seen that as thesupply-valve 37 opens or unseats automatically when the pressures onopposite sides of the piston become equalized the remainder of theworking or righthand stroke of the pistou is eected without backpressure. During the working stroke of the piston the check-valve 25 andair-admission valve 22 are closed by the pressure on their upper sides,and compression of the gas in the supply-pipe 19 or leakage thereof tothe atmosphere is therebyprevented. In the succeeding left-hand orcompression and suction stroke of the piston the initially-compressedcharge of a mixture of gas and air which has been supplied to thepressure side of the piston during the preceding working A fly-wheel l0is secured upon of the piston is effected.

the limit of its left-hand traverse, when the charge is ignited andanother working stroke Gas and air for the next succeeding workingstroke are drawn into the cylinder on the suction side of the pistonduring the left-hand stroke thereof, as first above described.

My invention presents in practice the substan tial advantagesofenablinga working impulse to be exerted at each revolution oftheshaft, of relieving the piston from objectionable back pressure duringits working stroke, and of funlly and elfectually discharging the burnedgases and residuum of combustion from the cylinder after each workingstroke.

I claim as my invention and desire to secure by Letters Patent- 1. In aninternal-combustion motor, the combination of a cylinder having anadmission-port at one end and an exhaust-port at the other, and havingits wall solid or imperforate between said ports, a piston working insaid cylinder, admission-valves controlling the supply of a mixture ofgas and air to the admission-port, an independent exhaustvalvecontrolling the discharge of products of combustion from theexhaust-port, and a supply-valve controllingr a passage through thepiston for the traverse of initially-coinpressed charges of a mixture ofgas and air from the suction side of the piston to the pressure sidethereof.

2. In an internal-combustion motor, the combination of a cylinder havingan admission-port at one end and an exhaust-port at the other, andhaving its wall solid or imperforate between said ports, a pistonworking in said cylinder, a crank-shaft and flywheel connected to androtatable by the piston, means for automatically effecting the supply ofa mixture of gas and air to the admission-port, means, actuated from thecrankshaft, for releasing products of combustion from the exhaust-port,and an automaticallyoperating supply-valve, controlling a passagethrough the piston and alording traverse for a charge of a mixture ofgas and air from the suction to the pressure side thereof, coincidentlyWith the release of the products of combustion from the pressure side.

3. In an internal-combustion motor, the combination of a cylinder havingan admission-port at one end and an exhaust-port at the other, andhaving its wall solid or imperforate between said ports, a pistonworking in said cylinder, a crank-shaft and fly-wheel connected to androtated by the piston, an admission-valve casing, communicating, by theadmission-port, with the cylinder, on the suction side of the piston, agas-supply pipe leading into said casing, an air-admission valvecontrolling an air-inlet to said casing, a check-valve controllingcommunication between said casing and the admission-port, auexhaust-Valve casing having a discharge-passtroke is further and nallycompressed on sageand communicating, bythe exhaust-port,

IOO

IIO

with the opposite end of the cylinder, an exhaust-valve controllingcommunication between said casingrand the exhaust-port, oonnections withthe crank-shaft, through which said exhaust-Valve is unseatedcoinedently with the compression of 2L charge of mixed gas and air bythe piston, and a' supply-valve l controlling a passage thrrough thepiston and opening toward the exhaust-valve.

WILLIAM S. HALSEY.

Witnesses:

J. SNOWDEN BELL, CLARENCE A. WILLIAMS.

